Alternating amaurosis fugax and temporal arteritis

To describe a patient with alternating amaurosis fugax and the importance of this condition in diagnosing temporal arteritis. Case report of a 77-year-old man who had numerous episodes of transient alternating loss of vision for several days. Temporal artery biopsy showed vasculitis with a giant cell component. Alternating amaurosis fugax in an elderly patient suggests arteritis rather than atheromatous disease, and temporal artery biopsy should be considered.